Mine car



June l2, 19.28.

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lllt man* June 12, 1928.

W. D. HOCKENSMITH MINE CAR ZSheets-Sheet 2 #QZ/w Filed Feb. 12, 1924 Patented June 12, 1928.

insure!)l STATES iPArEN TOFFICE WILnR D. HocKENsMTH, on IRWIN, rnNNskyLvANrA.

`Minn (JAR. y i,

y Application filed February 12, 1924.y Sera1"Nofi692,i242." l

type such, for example, as is shown inmy` Patent Number 1,496,339, granted June 3, 1924. i

In such cars the maxium capacity, which is of primary consideration, is obtained by extending the floor outwardly beyond the car wheels, the tops `oi `which are inclosed within a housing v'secured to the "door bot# tom and extending thereabovc. Obviously, the usual method of hanging the brake shoes above the lwheels for application to the tops thereof cannotbe applied to this type of car without materially reducing its capacity. This .is further accentuatedby the additional presence of the cumbersome brake rigging, whichV accompanieslthis formi of brake, above the shoes. Vhile the useofmetal brake bands overcomes to some extent the above outlined handicaps, fthe latterfare entirely useless for holding cars ro n a steep grade and therefore have no practical application.

An object of this invention isto provide a brake mechanism for mine cars generally,

but particularly `adapted tothin seam cars, so constructed and arranged as to be located wholly below the tops of the c-ar wheels in order to provide maximum capacity for a given car.

It is well known toy those skilled in the art that the most etlicient and practical location for the brake operating lever is at the rear of the car and a further object is to provide, a simple, rugged and improved form of brake operating mechanism which can be easily and surely operated from the rear of the car.

A still further object is to provide a strong, rugged brake mechanism which may be easily and quickly removed for repairs and is at the same time cheap to manufacture, easy to install and positive in operation. i

These and other objects, which will be oby vious to those skilled in this particular art,

are accomplished by means of this invention, one embodiment of which is shown, by way of example,v in the accompanying drawings in which Figure 1 is a side elevation of part of'a mine Vcarhavingr my im-v proved brake mechanism, Fig. 2 is a yhori- Zontallongitudinal section'on the line 2 2 of Fig,` 1, Fig.' 3 is a rear elevation showing the brake operating lever, Fig. 4 is aisec- .tionion the line 4--4 of Fig, and Fig.` 5

is a section on the line 5 5 of Figa. n

The mine car 6 has the usual'wheels 7 and 8 on each side thereof and a h'ousingf) is provided over each set of wheels. In order to do awayvfith the necessity of cumbersome brake rigging overthe wheelsof the car, which, as above noted, decreases the capacity thereof,` I` construct my brake mechanism as follows f A brake supporting bar or bolt 10 is sup-` ported in the side of each housing andmidway between thewheels at that side of the car.' Two brakefs'hoe supporting `arms 11 and 12` are supported on the bar or bolt and depend therefrom downwardly `between the wheels. In4 the drawings `the* arm 11 is shown as y provided with a curvedy hook shaped end 13 whichdirectly embraces the ybolt 10. .Thearm`12has a similar curved end 14 which is hung over the end 1301i' the l other arm; `Spacers 15 surround the bolt on opposite sides ofV the brake shoe supporting arms sowas to center them on the bolt. The arm 11 has an outwardly turnedftlange 16 which assistsin support-ing a brake shoe 17 mounted'on the `arm and adapted to contact with the periphery of the wheel 8. The

arm 12 has a similar, outwardly extending ange 1.8 and a brake shoe 19 adapted to contact` with the periphery of the wheel 7.

A brake actuator is provided between the arms and isshown as being in the form of a roller bar 20 which extends transversely across the car and is mounted in bearings 21 secured tothe car bottom, see Fig. 4. The` roller bar extends outwardly between the arms `11 and 12 andis provided with flanges 22 and 23 whichare adapted to separate the arms lland` 12 so as to apply the brake shoes to the wheels 'of the car upon rotation of the roller bar 20.

This rotation of the baris accomplished by means of abrake rod 24 which is connected to a crank arm 25, formed on the end of the bar 20 and extends rearwardly along the car. The rear end of the brake rod is secured to one arm of a bell crank lever 26,

which is shown in the form of a triangular member pivoted between itstwo arms to a bracket 27 secured to the rear of the car tions 32- ini ,theend of thebrake rdd. Qilby means' of which itk may be *connected` to the adjacent arrnfof the bellcrank lever 26 and means; 0i :which the connecting rodi 29` may .be'secured tothe brake lever-30. t f

It Willbe understood that the rolleribar -20 extends across" the entire `Width of the car and operates-brakeshoes ronfthe Wheels 0f the I.other side .in the samev mannerin which it operatesthe brakenshoesf 17 and 19.` 1In, this -waycthe brakesarelsimultaneously applied to all foon "Wheels by manipulatiomof thesingle` hand lever at the rear of the car.,.4 i Y rNo brake rigging iis*V proyided over `[the wheels so as to: reduce `tfhecapacity`r of Athe 4by Letters Patent is car and the entire brake mechanism is contvenientlyk controlled from `the-rear of the car rather than the side'theneof. t

u In caserepairs are needed; it1 is only' neces` sary to -remove thebolt 10 in orderlto rejmove the brake. shoes and their entire supportingstructure` What I claim as new and desire to secure `1'. In a mine caiga bra-kemechanismn- `eludingy a supporting. bar, a brake shoe eupporting u.arnoA haring-a curved iupperfend wardlytherefrom, a second-haake shoe supporting armfy embracing .the cunved upper en d of saidv first arm and extending down- Wardly frein said bar substantially parallel to said' first arm, brakeshoes supported by said arms and means for actuating said arms so as to operate said shoes.

i `2. In amine eau), acbody orton provided with a wheel housing in t e ioor thereof,

-brakemechanis1n= including' a supporting bar projecting4 through a laterali walt of said housing and rigidly secured thereto, a brake shoe supporting arm having'a curved upper end embracing' said bar and extending downwardly therefrom, a second brakeehoe supporting armeembracing the curved upper endof said/first arm and extending downwardly, from said bar substantially parallel to said rst arm, brake shoes supported by .saidarmsand means for actuatingsaid arms `to operatelsaidcshoes.

t 3. In ya mine car, a body portion having a wheelv housing mounted inthe floor thereof,

brake mechanisxnincluding a' supporting bar projecting through andlsecuredto the opposite lateral walls of said housing, a bnakedshoe supporting arm: having a curved Aupper end embracing ysaid bar and extending ,downwardly therefrom, a second? brake `shoe .supporting .armi embracing Athe curved =upper end ofsaid first arm and extending downwardly from said barvsubstantially parallel to said first: arm, spacers on 'said barrfor Apositioning,said armsl thereon, brake shoes supported by said arms and means for am .tuating saidarms to operate saidv shoes.

. Iniestimony Wheneof, I- `have Yhereunto subscribed my name this 9th dayof Feb riuary, 1924;

i WLLBUR nnoonjENsMrrrn 

